Spring for supporting vehicle-seats



(No Model.)

S. L SAUNDERS. SPRING FOR SUPPORTINGVEHIGLE SEATS.

PatentedMar. 15, 1892.

THE mmms vnEns cm, Pnm'cumm, wasmunmu, 07c

UNITED STATES PATENT OFFICE.

SAMUEL L. SAUNDERS, OF LYNN, MASSACHUSETTS.

SPRING FOR SUPPORTING VEHICLE=SEA TS.

SPECIFICATION forming part of Letters Patent No. 470,707, dated March 15, 1892.

Application filed October 29 1891. Serial No. 410,297. (No model.) 7

To all whom it may concern:

Be it known that I, SAMUEL L. SAUNDERS, of Lynn, in the county of Essex and Commonwealth of Massachusetts, have invented a cer tain Improvement in Springs for Supporting Vehicle-Seats and Similar Devices, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention has for its object to provide means for supporting vehicle-seats and similar bodies, whereby the joggle and jar incident to said vehicles while moving may be prevented in greater or less degree from reaching the seat or its rider mounted thereupon.

In the present instance theinvention is rep resented in connection with and supporting the seat of a bicycle.

Figure 1 of the drawings is a perspective view, and Fig. 2 is alongitudinal vertical section thereof.

The working parts of the bicycle may be constructed in any usual and customarymanner, and the same are not represented in the drawings, except so much of the frame-work thereof as is necessary to illustrate lnyinvention applied thereto.

The metallic plate A is made to support, as represented, the seat B, and is bent to form the inwardlyconverging springarms a I). Said arms are supported one in a fulcrumblock e and the others in a fulcrum-block f. Said fulcrum-blocks are preferably composed of three rolls mounted in a frame to turn in the end of their supporting-bars G H, which bars are secured to the frame-post N and are adjustable to vary the distance of the fulcrumblocks apart. The spring-arms are passed between the rolls of the fulcrum-blocks with the rolls bearing against the sides of the springarms, as shown. When thus supported, a

movement of the seat toward the supportingframe operates inwardly against the springarms, thereby causing the arms to move downwardly in the fulcrum-blocks and approach each other until the increased spring-resistance of the arms takesup the added momentum of the rider or body mounted upon the seat. The fulcrum-blocks are supported adj ustably to vary their distance apart in order that the blocks may be adjusted to develop a normal tension of the springs 66 b, united to counter-poise the normal weight of the rider orbody temporarily upon the riders seat, and thus insure the parts from moving so far as to wedge or cramp.

I have described and represented the fulcrum-blocks as composed of three rolls, and

I prefer to so construct them, as it reduces the liability of the parts to cramp; but I am aware that blocks having single rolls adapted to bear against the outside of the springs are useful and embody the spirit of my invention.

1. In combination, the fulcrum-blocksab, a suitable supporting-frame, and the springs e f, supported movably in the fulcrum-blocks and sustaining the seat or body h, substantially as described.

2. In combination, a supporting-frame, the fulcrum-blocks a b, supported on said frame and adjustable to vary their distance apart, and the springs e f, supported movably in the fulcrum-blocks and sustaining the seat or body 71 substantially as described.

Signed at Lynn, Massachusetts, this 13th day of October, A. D. 1891.

' SAMUEL L. SAUNDERS.

WVitnesses:

JOHN F. NELSON, C. B. TUTTLE. 

